Coupling



Patented May 10, 1932 UNITED STATES PATENT OFFICE :romw r. caN'rELL, or smrnaivcrsoo, oatmomvraootrrnmo Application filed November 18, 1931. Serial no. 574,807.

An object of my invention is to provide an improvement over the form'of the device shown 1n my co-pending application, Serial No. 469,174, filed July 10, 1930. In my copending application, I showed springs Eressed pistons for actuating catches for olding the two parts of the coupling together.-

In the present form of the invention, I also show spring-pressed pistons for moving catches into operative position for hold1ng' the two parts of the oupling together, but I further show' communications between the pistons and the interior of the coupling, so

. that the pressure oft-he fluid passing through the coupling will beutilized in urging the hooks into operative position. From this, it will be apparent that the greater the force or pressure of the fluid passing through the cou ling, the greater will be the force exerted by t e ipping members in holding the two parts or the coupling together. The hooks of the coupling are so fashioned as to urge the two parts of the coupling toward each other I with greater force as the pressure of the fluid passing through the coupling increases.

A further object of my inventionis to pro-' vide a device of the type described which makes use of a novel release mechanism for freeing the two parts of the coupling without the necessity of unscrewing one part from the other, as is the casein standard couplings. The device is simple in construction, and the working parts are entirely housed by a casing when the two parts of the coupling are secured together.

Other objects and advantages will appear in the following specification, and the novel features of the device will be particularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawings forming a part of this ap-' plication, in which 7 Figure 1 is a longitudinal section through the device showing portions in elevation; Figure 2 is a section along the line 2*---2 of Fi re1;-and 7 igure3 is a section along the line 3-3 of Figure 1 showing 'partsof the device in elevation.- 3 i In carrying out my invention, I provide a coupling consisting of the parts A and B. v

The coupling is desi ned primarily for the quick connection of re hoses to each other 1 and to the water hydrant. The part A in Figure 1 is shown connected to a hose 1, indicated by dottedlines, the end of the hose being threaded into a threaded portion 2 of the part A. Figure 1 also shows the part B as being threaded'at 3 and as receiving the end of a hose section 4. When the device is used on a Water hydrant, the part A is threaded.

catchesll that are carried by the part B and which will hereinafter be described more fully. The head 8 also has a cam portion 12 forguldingthe catches 11 onto the shoulder The tubular member 6 is threaded in a casing 12', and this casing has a gasket 13 disposed adjacent to the threaded portion 2 so as to-form a water-tight seal with the fire hose" or the water hydrant. vThe casing 12' is also enlarged, as at 14, to form a part of a housing 15 that encldses the working parts. The enlarged portion 14 has the internallythreaded portion 5. The part B has a tubu-. lar portion 16 that is threaded at 17 into a casin 1,8. The casing is'enlarged, as at 19,

and orms; the other .part of the housing 15.'

The enlarged portions 14 and '19 are cut in the manner shown to form afjoint 20. The tublflar portion 16 has a rounded countersunk end 21 that is designed to snugly fit a rounded end 22 of the tubular portlon 6,

The abutting of these two ends rovides a The'catches 11 are pivoted at 23 betwe en 5 upstanding lugs (see Figure 2);, that are .liquid-tight seal -between the tu ular portions 6 and 16.

A ably receivedin cylinders 27 t that are inte- V of t e force of the fluid ing the catches when it is desired to free the part B the enlarged por- ,P

1 head, pistons actuated by the -of the ring 30, but also limit ing the outer ends of pins the pressure of described.

gral with the tubular portions 16. S rings 28 urge the pistons 26 against the catc es 11 and tend to move the catches into locked position so as to hold the parts A and B of the coupling together.

The tubular rtion 16 has openings 29 in its walls for all iving the fluid to gain access to the cylinders 27 and to force the catches 11 into operative position. It will be seen from this construction that the greater-the pressure of the fluid passing through the coupling, the greater will be the force of the pistons 26 on the catches 11, and the construction of the catches is such that as the they will cause the head 8 to move the tubular portion 6 with greater force against the tubular ortion 16. In this way, the increasing will cause the parts of the coupling to provide a more liquidtight seal.

In Figure 3, I show a novel means for mov- 11 into inoperative fposition rom the part A. A ring 30 encircles tion 19 of the casing 18 and has grooves 3 provided on its inner surface for receiving pigs '32 that are carried by the portion 19. e pins 32 not only prevent axialmovement the rotational movement of the ring with respect to the portion 19. I

The ring 30 also has recesses 33 for receivcarried by the ortion 19 and have enlarged heads 35 that hear against the catches 11. Cam portions 36 are provided in the ring 30, and when the rin is rotated with respect to the portion 19 in either direction, the cam portions 36 will move the pins 34 inwardly and the pins in turn will swing the catches 11 into open or inoperative position. The part- B of the coupling "may now be quickly removed from the part A without the necessity of unscrewing any parts. The ring 30, if desired, maybe provided with openings 37 for removably receiving handles 38 that may be used in rotating the. ring.

When it isdesired to secure the part B of the coupling to the part A, the portions 14 and 19 of the casing 12 and 18 are brought into registration, and this will bringrthe catches 11 into the desired position. he ring 30 mag now be rotated so as to free the pins 34, an the spring-pressed pistons will now cause the catches 11 to lockgether. The fluid may now be turned on, and the fluid will move the catches osition in the manner alr ad-y crews 16a lock the parts 6 {end 12 together and also the parts 16 and 18.; 4

into locked force is increased,

34. The pins are the parts'A and B to-* While I have sh tgn v nly the preferred form of my invention, it should be understood that various changes or modifications may be made within the scope ofthe appended claims without departing om the spirit of the invention. I

I claim! 1. A coupling comprising two separable parts, one part having atubular portion with a conical-shaped head, and a casing spaced from the head; and the other part having a tubular portion designed to make a liquidtight connection wit the first tubular portion, catches pivotally carried by the second part and engageable with the base of the cone head, pistons actuated by theIpressu-re of the fluid in the tubular portions for urging the catches into locked position, and a casin cooperating with the first casing for forming a'housing to enclose the'operating elements.

2; A coupling comprising two separable parts, one part having a tubular portion with a conical-shaped head, and a casin spaced from the head; and the other part aving a' tubular portion designed to make a liquidtight connection with the first tubular portion, catches pivotally carried by the second art and engageable with the base of the cone pressureof the fluid in the tubular portions for urging the catches into locked position, a casing coopcrating with the first casingfor forming a housing to enclose and springs for moving the pistons for swinging thecatches into lockedpositions prior to the fluid pressure being turned on.

parts, one part having a tubular portion with a conical-shaped head, and a casin spaced from the head; and the other part aving a tubularportion designed to make a liquidtight connection with the first tubular portion, catches pivotally carried by the second part and engageab cone head, p stons actuated by the ressure of the fluid" 'n ing the catches into locked position, a casing cooperating with the first casing for forming a housing ments, and manually-controlled means for the operating elements,

le with the base of the the tubular portions or urg 3. 'A. coupling comprising two separable A to enclose the operating elepositively moving the catches into inoperative position.

4. A coupling comprising two separable parts, one part having a conical shaped head, and, the other part havin a tubular portion a liquid-tight connection lar portion, catches pivotally carried by the second part and engageable with the base of pressure oi the fluid in the tubular portions for urging the catches into locked position. coupling "comprising two separable eparth sh ped head,

and the other part designed to make with the first tubutubular portion with a tubular portionowith the cone head, and pistons actuated by the I having a tubular portion desi ed to make a liquid-tight connection with t e first. tubular portion, catches pivotall carried by the second part and engageab c with the, base of 5 the cone head, pistons actuated by the presa sure of the fluid in the tubular portions for urging the catches into'locked osition, and springs for moving the pistons or swinging the catches into locked positions prior to the fluid pressure being turned on.

' catches, a ring carried by the casing and hav- 8. In a coupling, locking means including to, swing the catches into inoperatlve posi- 6. A coupling comprising two separable parts, one part having a tubular portion with a conical-shaped head, and the other part having a tubular portion designed to make 15 a liquid-tight connection with the first tubular portion, catches pivotally carried by the second part and engageable with the base of the cone head, pistons actuated by the pressure of the fluid in the tubular portions for 2 urging the catches into locked position, and

manually. controlled means for positively moving the catches into inoperative position.- In a coupling, locking means including catches, a casing, plungers for moving the ing cam portions for causing the plungers to swing the catches into inoperative position when the ring is rotated with respect to the casing. r

catches, a casing, plungers for moving the catches, a ring carried by the casing and have. ing cam portions for causing the plungers Y tion when the ring is rotated with respect to the casing, and cooperating stops carried by the casing and rin for limiting the movement of the ring, t e casin stops also preventing axialmovement of t ering along the v 4o casing. I

9. A coupling comprising two-separable tubular members; a conical-shaped head carried by one member, catches carried by the other and engageable with the head, and fluid pressure actuated means controlled by the. fluid pressure within the members for uring the catches into locked position, -sald catches actin upon the head for moving the tubular memfiers together as the pressure .of

the fl'uid increases, I

7 a me; cANTnLL. 

